A particle of mass M = 0.2 kg is initially at rest in the xy-plane at a point (x = -l, y = -h), where l = 10 m and h = 1 m. The particle is accelerated at time t = 0 with a constant acceleration a = 10 m/s² along the positive x-direction. Its angular momentum and torque with respect to the origin, in SI units, are represented by L and τ, respectively. î, ĵ and k^ are unit vectors along the positive x, y and z-directions, respectively. If k^ = î × ĵ then which of the following statement(s) is(are) correct?